â€¢ Enhancements to the Mac App Store to get your Mac ready to upgrade to Mac OS X Lion.
â€¢ Resolves an issue that may cause Preview to unexpectedly quit.
â€¢ Improves support for IPv6.
â€¢ Improves VPN reliability.
â€¢ Identifes and removes known variants of MacDefender malware.
â€¢ Corrects timezone data in iCal for Lisbon-Portugal.
â€¢ Adds the ability to use Kerberos authentication to a web proxy server.
â€¢ Fixes an issue when saving documents from Xcode or TextEdit when using an NFS home directory.
â€¢ Fixes an issue when importing certain media files into Final Cut Pro.